Of the many APIs we published this week, eight were highlighted on the blog by our team of writers. In this post, we’ll shine a spotlight on those eight, which included the InviteBox Reward Callback API. InviteBox is a social referral program that offers incentives to sign up for a site or service. Functionality allows developers to see reports of users posting to social channels, when a friend visits a referred site, and when someone completes a referral goal.

Recently we have seen some imaginative mashups centered on books. From mapping story locations, building communities around book genres and even discovering the most obscure connections between details in your favorite stories, these mashups are nothing short of creative. In addition we've rounded up a couple of standard book search and recommendation applications. Some of the popular APIs used include Google Maps and Amazon.